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Old 07-08-2019, 09:37 AM
Josh Bernbaum Josh Bernbaum is offline
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Join Date: Feb 2009
Location: Brattleboro, VT
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Yes, I'd definitely avoid trying any Mn purples on SP as a base, I've seen those brownish results. But I've had some good purples in the past using your zinc/potash cad sel base from the 2013 class. So at some point I was thinking about adjusting the Brossphate to have more potash and less sodium, no nitrates, and maybe more zinc? to see if I can get a decent opal purple.
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